Energy Saving Calculation Method of Open Controlled Circulation Ventilation in Extra-long Highway Tunnel
A circulating ventilation and road tunnel technology, which is applied in mine/tunnel ventilation, tunnels, sustainable transportation, etc., can solve the problems of urban planning constraints, energy-saving calculation methods have not yet been formed, and the high cost of ventilation in super-long tunnels
Active Publication Date: 2020-01-17
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
However, problems such as the high cost of ventilation for extra-long tunnels and the location of shaft excavation restricted by geology and urban planning are still prominent, and the energy-saving calculation method for open-type controllable circulation ventilation of extra-long highway tunnels has not yet been formed.
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[0107] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0108] see figure 1 , figure 2 The open-type controllable circulating ventilation system of the extra-long highway tunnel includes a circulating air duct 5 arranged in the bypass tunnel of the tunnel and parallel to the tunnel. Between the tunnel entrance 1 and the induced air section B of the circulating air duct 5 is the upstream tunnel 2, and the circulating air Between the ejection section E of the road 5 and the tunnel exit 9 is the downstream tunnel 8, the circulating air duct 5 communicates with the tunnel through the air induction section B and the ejection section E at both ends of the tunnel, and the tunnel between the upstream tunnel 2 and the downstream tunnel 8 is a tunnel Short path 14; Dust collector is arranged in circulating air duct 5, 12 is the dust collector inlet, 11 is the dust collector outlet; The entrance is connect...
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The invention discloses an energy-saving calculation method for open-type controllable circulating ventilation of an extra-long highway tunnel. The method of the present invention is mainly, at first, determine the calculation formula of the total power consumed by the open controllable circulation ventilation system; then determine the calculation formula of the total power consumed in the conventional air supply and exhaust shaft ventilation mode; compared with the conventional air supply and exhaust shaft Ventilation mode, determine the energy-saving calculation formula of the open controllable circulation ventilation system. In the case of determining the exhaust air volume of the conventional air supply and exhaust shaft ventilation method and the parallel air volume in the short channel of the tunnel, and given the circulation ratio, purification efficiency and frictional drag coefficient on the main branch of the open circulation ventilation system, then It can calculate the ventilation power consumption value saved by the implementation of the open controllable circulation ventilation system, so as to quickly and quickly complete the pre-evaluation of the implementation of the open circulation ventilation system.
Description
technical field [0001] The invention belongs to the technical field of disaster prevention and reduction in tunnels, and in particular relates to a method for calculating energy saving for an open controllable circulation ventilation system of an extra-long highway tunnel. Background technique [0002] Highway tunnels are long and narrow spaces that are semi-submerged or shallowly buried. The treatment of pollutants such as smoke and dust generated by cars driving in tunnels has always been an important issue of concern to the industry. Generally, mechanical ventilation is used to dilute pollutants such as smoke and CO, and the dirty air is discharged to the environment outside the tunnel, and it belongs to the direct current system scheme. The ventilation system of long-distance or extra-long-distance road tunnels must cooperate with ventilation shafts to meet the wind demand for diluting pollutants in the tunnel. The ventilation of extra-long highway tunnels specifically ...
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IPC IPC(8): E21F1/00E21D9/14
CPCE21D9/14E21F1/003G06F30/20Y02T90/00
Inventor 陈世强陈永平王海桥郝小礼李轶群李石林
Owner HUNAN UNIV OF SCI & TECH